STATE AGRICULTURAL SOCIETY. 
793 
TOBACCO-WORM. PARASITE’S DESTROYER DESCRIBED. 
long to the end of its body, and is of a dark or bottle green color with a 
brassy reflection, and finely shagreened upon the head and thorax. The 
head is large and placed transversely, about three times as broad as it is 
long, convex in front and concave at its base. Viewed in front it is nearly 
circular, with a large oval eye slightly protruding upon each side, of a 
dull red'color fading to brown after death. On the crown three ocelli or 
eyelets appear as glassy dots placed at the corners of a triangle. Tho 
jaws are yellow, their ends brown, with four minute teeth The palpi or 
feelers are dull white. The antennas are inserted in the middle of the face 
and when turned backward reach about half the length of the thorax. 
They become a little thicker towards their tips, and are of a brown color 
with the long basal joint dull pale yellow, and are clothed with a short 
incumbent beard. They are composed apparently of nine joints, the first 
joint being long and smooth, and forming- an angle with the remaining 
joints. The second joint is the smallest of the scries, being but little 
longer than thick and obconic in its form. The third joint is thrice as long 
and nearly thrice as thick as the preceding, and has the shape of a pear, 
the contracted portion of its base being formed of two rings or small joints 
which are rarely perceptible even in the live specimen when highly magni¬ 
fied, except these organs be put upon the stretch. The fourth and fol¬ 
lowing joints are a third shorter than the foregoing, and are nearly equal 
and square in their outline, each successive joint very slightly increasing 
in thickness and diminishing in length. The last joint is about thrice as 
long as the one preceding it, of an oval or sub-ovate form, rounded at its 
base and bluntly pointed at its apex, and is probably composed as in the 
other species of this genus of three joints compactly united together. 
The thorax scarcely equals the head in width and is egg-shaped and thrice 
as long as wide. On each shoulder is a slightly impressed Hue extending 
obliquely backward and inward. The abdomen is a third shorter than the 
thorax, and in the live insect surpasses it in thickness, is egg-shaped and 
convex with its tip acute pointed. When dried it scarcely equals the 
thorax in thickness, and becomes strongly concave on the back and trian¬ 
gular when viewed from one side. It is smooth, polished and sparkling, 
of a green black color, the middle segments each with a broad purple 
black band visible in particular reflections of the light. Beneath it is black 
and at the tip shows some fine impressed longitudinal lines forming the 
edges of the groove in which the sting is inclosed. The legs are slender, 
pale wax yellow, with the feet and ends of the shanks dull white, the hips 
of the hind legs being stout and black, with their outer faces green blue 
and their tips pale yellow. The feet are five-jointed and dusky at their 
tips. The wings are transparent and reach slightly beyond the tip of the 
abdomen when at rest. The anterior ones are broad and evenly rounded 
at their ends, and have, near the outer margin, a thick brown rib or sub¬ 
costal vein extending more than a third of their length and then uniting 
/With the margin and terminating some distance forward of the tip, after 
sending off a short straight stigmal branch which is thickened at its end, with 
its apex notched. Towards the inner margin an exceedingly lino longitu- 
